In a distant second behind "culture war and everything to do with culture war", the worst thing ever to have happened to fandom might well be Who Would Win threads. As an intellectual exercise by people familiar with both characters, they're fine, but when they become a pissing match between fandoms, revealing that all present haven't matured past the childhood habit of using fictional characters as tokens in a game of Calvinball, it makes me want to pray for faster nuclear armageddon.

yeah, they’re pretty crummy, especially when they verge into territory of “praising stories and rewarding authors for being bad at depicting power and not thinking about the actual ramifications of things in their story” – which they often do, any time science fiction or Goku is involved